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Dangerous Winter Storm over the Northern Plains, Heavy Lake Effect Snow Likely for Western New York

Blizzard conditions are expected to persist over portions of the northern Plains through midday Wednesday. Strong winds and very cold temperatures will also yield sub-zero wind chill readings and blowing snow. Further east, Lake Effect Snow Warnings are in effect for portions of western New York. Snowfall amounts of 2 to 3 feet are possible late week into the weekend. Read More >

Hazardous Weather Conditions

Current conditions at

Sherman/Denison, Grayson County Airport (KGYI)

Lat: 33.72° N Lon: 96.67° W Elev: 748 ft.




Humidity 82%
Wind Speed NE 3 mph
Barometer 30.09 in
Dewpoint 32°F (0°C)
Visibility 10.00 mi
Last update 7 Dec 7:15 am CST
Detailed forecast for

Grayson County

Mostly cloudy. Highs in the lower 50s. East winds around 5 mph.
Mostly cloudy. A 20 percent chance of rain in the evening. Colder with lows in the mid 20s. North winds 10 to 20 mph becoming 15 to 20 mph after midnight. Gusts up to 30 mph. Wind chill readings as low as 13 after midnight.
Partly sunny. Much cooler with highs in the mid 30s. North winds 15 to 20 mph with gusts to around 30 mph decreasing to 10 to 15 mph in the afternoon. Wind chill readings as low as 10 above.
Thursday Night
Mostly clear. Cold with lows around 17. North winds 5 to 10 mph.
Sunny. Highs in the upper 30s. Northeast winds around 5 mph shifting to the southeast in the afternoon.
Friday Night
Mostly clear. Not as cold with lows in the upper 20s.
Mostly sunny in the morning...then becoming partly sunny. Not as cool with highs around 50. Wind chill readings around 20 in the morning.
Saturday Night
Mostly cloudy with a slight chance of showers and perhaps an isolated thunderstorm. Not as cool with lows in the mid 40s. Chance of rain 20 percent.
Mostly cloudy in the morning...then becoming mostly sunny. Highs in the upper 50s.
Sunday Night
Clear. Colder with lows in the mid 30s.
Sunny. Highs in the lower 50s.
Monday Night
Mostly clear. Lows in the upper 30s.
Sunny. Highs in the upper 50s.

Click Map For Forecast
306 AM CST WED DEC 7 2016

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database